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50/50 haldex mod

Discussion in 'A3/S3 Forum (8L Chassis)' started by beachbuggy, Jun 26, 2013.

  1. beachbuggy

    beachbuggy Well-Known Member

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  3. <tuffty/>

    <tuffty/> Badger 5 Edition...Its all about the flow...
    Staff Member Moderator Audi S3

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    No centre diff will be an issue... haldex is designed to 'slip' to counter this (unless in a straight line of course)

    All it essentially does is lock the valve in the position where the haldex clutch is fully engaged... not sure but suspect the various control modules may have something to complain about... lol

    Not something I would want to use on the road as a daily tbh

    <tuffty/>
     
  4. badger5

    badger5 www.badger5.co.uk
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    straight lines only need apply
     
  5. [Dave B]

    [Dave B] Daddy

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    I had this mod for a while without the use of a bolt....the haldex earth strap had snapped :ninja:
     
  6. Paradox1

    Paradox1 Active Member

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    couldnt you just fit a 17mm bolt for less than £120+
     
  7. Scullies

    Scullies Well-Known Member

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    Depending on the length of the pin at the end of the bolt, this mod actually might work in conjunction with the haldex electronics.

    My understanding is that the new bolt is going to relocate the valve a little deeper inside the oil gallery. This would cause the oil gallery to be closed off completely when the stepper motor moves the valve, giving you 50/50. On the other hand, I don't think the haldex will completely disengage as the valve would be restricting the oil flow. So you could be using anything from a 99/1 split to a 51/49 split when cruising.

    [​IMG]

    [​IMG]

    haldex info 1.jpg

    haldex info 2.jpg

    If the bolt is very long and keeps the haldex 50/50 at all times, then you can say bye bye haldex :crying:
     
  8. jezzy

    jezzy Member

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    50/50 constant.
    think the clutch in the haldex would wear super fast and i bet they aint cheap to replace
     
  9. Andrew@A.L.D

    Andrew@A.L.D May add NOS to 600+bhp?

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    Give me a old Haldex controller and i'm 100% sure i could make a adjustable one rather than a bolt like that for the same price as the above one
     
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  10. Dani_B19

    Dani_B19 Audi-sports own special child.

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    Anybody got a spare one for andrew?
     
  11. Andrew@A.L.D

    Andrew@A.L.D May add NOS to 600+bhp?

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    I know i can do it

    I'm sure someone has a damaged haldex
     
  12. superkarl

    superkarl MAN OF STEEL

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    Ive got a spare you can use andrew.
    You can have it for experimentation
     
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  13. Andrew@A.L.D

    Andrew@A.L.D May add NOS to 600+bhp?

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    Empty your inbox superkarl so i can send you details
     
  14. Scullies

    Scullies Well-Known Member

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    What's your approach to this Andrew? Same bolt style as advertised but adjustable or control the haldex ecu with a controller inside the car?
     
  15. Andrew@A.L.D

    Andrew@A.L.D May add NOS to 600+bhp?

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    Thats it
     
  16. Westy

    Westy Double Dark Side! Diesel & 8P

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    Ooo interesting stuff.
     
  17. Scullies

    Scullies Well-Known Member

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  18. Dani_B19

    Dani_B19 Audi-sports own special child.

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    Ooh I like this. Andrew I thought your mate was developing one for you?
     
  19. Andrew@A.L.D

    Andrew@A.L.D May add NOS to 600+bhp?

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    He still is but his is like a piggy back ECU with a LED monitor showing the split
     
  20. Westy

    Westy Double Dark Side! Diesel & 8P

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    Would love one with an adjustable bias wheel on the dash.
     
  21. superkarl

    superkarl MAN OF STEEL

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    Inbox cleared.


    Are You saying it will be adjustable from stock to permanant 50/50? So when in stock mode it will do its own thing??

    Or a case of 100/0 to 50/50 fixed?
     
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  23. Andrew@A.L.D

    Andrew@A.L.D May add NOS to 600+bhp?

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  24. superkarl

    superkarl MAN OF STEEL

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    :thumbsup: the SQS one is the one that gets most of my interest, so thats good!

    Sounds like your mate is trying to recreate what the monster performance s3 has, the bulgarian car, gtx42 etc...
     
  25. Jason.s

    Jason.s Active Member

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    I've also got a spare from an R32 with only 40k on it that I was saving incase mine went pop.
     
  26. rhys1210

    rhys1210 Member

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    i just see that bolt damaging the standard controller.

    I brought the race controller (not the competition/blue)which is 50/50 all the time from the tt shop, this comes from haldex/borgwarner them selves, and i believe they uprate the piston in the controller as well as the software, for the higher pressure.

    just my 2p.
     
  27. TTazRS

    TTazRS New Member

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    Any updates on this? I am very interested.
     
  28. Andrew@A.L.D

    Andrew@A.L.D May add NOS to 600+bhp?

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    I'm just waiting for someone to give me a busted Haldex
     
  29. superkarl

    superkarl MAN OF STEEL

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    Ive simply not had the time to get under the rear of the car to take mine off to give to andrew. Will do it as part of a fluid change.
    Getting the engine sorted has just been more of a priority with the little time i have.
     
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  30. jojo

    jojo Looking for Boost!
    Staff Member Moderator quattro Audi S3

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    I wonder if Gops still has a broken one?
     
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  31. s3gazz

    s3gazz Well-Known Member

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    S3dave might be able to help with this shore he had a spare nocking about
     
  32. Andrew@A.L.D

    Andrew@A.L.D May add NOS to 600+bhp?

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  33. s3gazz

    s3gazz Well-Known Member

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    Cool u think this will be a werth wile mod then
     
  34. Andrew@A.L.D

    Andrew@A.L.D May add NOS to 600+bhp?

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    Dave doesn't have one

    for sure it will be worth it, i think the haldex controller is worth it with high power s3
     
  35. Gops

    Gops 6th gear @7000rpm

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    I still have the broken one in my garage Andrew! Ill have to dig it out but I'm pretty sure it's there if you want it?
     
  36. Andrew@A.L.D

    Andrew@A.L.D May add NOS to 600+bhp?

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    Please Gops

    as as soon as you get it please pm me
     
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  37. jojo

    jojo Looking for Boost!
    Staff Member Moderator quattro Audi S3

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    You will be the fourth member on here to have owned this particular controller! lol
     
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  38. s3gazz

    s3gazz Well-Known Member

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    Ill have your blue haldex then Andrew lol
     
  39. Jason.s

    Jason.s Active Member

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    I still have a controller in the garage that's only had 30/40k put on it. Was only taken off due to controller upgrade and given to me for nothing.
     
  40. S3 Paul

    S3 Paul Well-Known Member

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    Ive got a TT one on a rear diff unit i bought...

    Jason i would say save the one you have pal.
     
  41. jojo

    jojo Looking for Boost!
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    My Haldex controller just broke! :sob:
     

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